Split nut



W. C. SMITH Feb; 10, 1931.

SPLIT- NUT Filed Sept. 26, 1928 Patented Feb. 10, 1931 WILLIAM 0. SMITH, or ooRsIoANA, 'ruxiis Application filed September 26,1928. 'Seria1NoQ308A76. j

p The present invention relates to a split nut capable of many serviceable applications for coupling shafts, uniting the sections of split pulleys and in general serving as a separable coupling whilst serving the same functions as an ordinary solid nut and when used 1 on machinery of any description will permit dismantling the same with minimum trouble.

In carrying out the invention I provide a pair of annular parts covering different 7 size" arcs adapted to unite with a tongue and groove joint preferably of T-shape formed between the parallel sides of the sections.

he innerperiphery of the sections are provided with a screw thread preferably, of tapered character and the parts as described are capable of being assembled to form a coupling for two aligned shafts for split bushings, or for any analogous uses which occur to a skilled engineer.

My invention therefore consists of a sectional nut threaded interior'ly and composed of two unequal annular sections fitting together in a tongue and groove oint between its adjacent sides.

It comprises other features of novelty which will be hereinafter more fully described and definitely indicated in the appended claim.

Inthe drawings illustrating the invention: 7

Figure 1 isa side elevation of an application of my invention as a coupling.

Figure 2 is an isometric projection of the two complementa-l parts of the nut disassem bled.

Figure 3 is an enlarged elevational sectional view on the line 33 of Figure 1.

Figure 4 shows an application of the invention to a separable bushing or split pulle v lteferring now in detail to the drawings,

7 1, 2, represent two complemental parts covwhen assembled to form a complete annular ure 2. Similar tongue and groove compleering difierent arcs of a circle and adapted mental parts are providedlon each edge the two' sections and the'inner periphery.

of each section is provided with a screw thread 3 preferably of slightly tapered charf acter. Thus when theparts are broughttogether the portion forming the smaller arc may be interlinked withthe associate part1 while surrounding the shaft to be coupled and then by turning the assembled parts on a split bushing having a male thread the 5 split nut becomes firmly boundin all planes of movement against separation.

In Figure 1 it is shown as applied to shaft coupling, two split parts 7, 7 at, having a longitudinal plane of separation 8 provided with a threaded male extension at each end, and nuts 1, 2, applied 'thereto'and threaded over the male extensions thereby firmly coupling them together. I preferably-make the present joint slightly tapered so that when the split nut has gone over the coupling by a Stilson wrench or the like, a firm bond will be provided connecting the shafts.

In Figurev l the two sectional parts of the nut are shown in proximity-ready for assembly overt-he split bushings 9, 9a, and when brought together to the position shown in Figure 1 they will be united andmay be operated as'a unit to thread over the male threads as 9a, formed on the sectional bushings. The split nut has a variety of uses; it may be used as a bushing by threading both outside and inside asa reducing bushing. It may be used for fastening collars on shaftings -without takin down the shafts, requiring no set screws or lieysor the like; it avoids any pro ections on revolvmg parts. Its use as I a coupling for alined'shafts has already been. described. It is adapted for use on split pulleys by providing a threaded boss at the hub. Moreover, the parts being annular effects a true alignment and there is no key to divert such. It can also be used as a packing gland for pumps or engines. It willbe noted that the interlocking sections by reason of the T-shaped tongue and joint connection prevents any lateral displacement on either section and the character of the taper joint gives the parts great tensional resistance on power by a wrench or the like. The nut parts Inay, ofcourse be made of any other material than metal for special uses. 1

Having thus described my invention what I claim as new and desire-t0 secure by Let ters Patent, is I v V A sectional nut comprising large and small sections of difiei e'nt arcs, the-larger section being greater than that of a senn-clrcle to provide a restricted slde entrance, the larger section being further provided with Ti shtfified' cavities in communication with the side edges of the body thereof, the smaller sect1on having tongues of substantlal T-shape conforming longitudinally thereofto 'the'ilnm'ediate contour of tl1e;-asse1'nblednut, andsa'id nut having-an 'mtemorl'y threaded and tapered bore including the-inner surfaces of said tongues.

In testimony Wheiieof I jalfix signature. 7

:W ILLIAM- 0; SMITH. 

